Rain doesn’t want to cancel my subscription

I’m so disappointed at Rain . I was using their services but I had to call them almost everyday to ask assistance with the internet until I was fed up with them . I called the consultant and ask to close my account with them . He assured me that he will close and another consultant will call later that day . Nobody called and I thought everything was fine .. I eventually stopped using their services for months but still I would get notifications that they’re still trying to deduct from my account. I called more than 3 times asking what’s happening with my account because my account balance kept increasing yet I thought my account was closed . The consultant always say they’re transferring me to the closure department (something like that ) but never does . No one is helping me with this case. The money that they claim I owe has accumulated to more than R5000 . Today they deducted R625 . I want my money from Rain!